Good morning from Rome,
I would like to know how could i change the font size of the header menu from debut theme.
thank u so much in advance.
Topic summary
Main issue: Adjust the font size of the header navigation menu in the Shopify Debut theme (desktop/mobile).
What happened:
- Helpers requested the store URL/password to diagnose.
- A step-by-step solution was provided: in Online Store > Themes > Edit code, add a custom CSS rule in theme.css targeting the navigation label to set a new font-size. A screenshot showed the result.
- The original poster confirmed the change worked and expressed thanks.
Latest update / new requests:
- The poster asked how to “reduce the price” shown in the “promo” menu and how to increase the title font, sharing screenshots for both items.
- No follow-up guidance or resolution for these two new styling requests yet.
Outcomes and status:
- Header menu font size issue appears resolved via custom CSS in theme.css.
- Additional requests (promo price adjustment and title font increase) remain open.
Notes:
- Screenshots were shared to illustrate both the successful menu change and the new issues; exact CSS/selectors for the new requests have not been provided yet.
Hello @Dakotarome
Can you share store URL?
@Dakotarome Please follow below steps to update the font size for the description. Let me know whether it is helpful for you.
- From admin go to “Online stores” → “Themes”.
- Click action button from the current theme and select “Edit code”.
- Search for “theme.css” file and paste the below code at the bottom of the file.
.site-nav .site-nav__label {
font-size: 15px !important;
}
Result will be like,
NOTE: You can change the font size as per your need.
Please provide your support by click “Like” and “Accepted” if our solution works for you. Thanks for your support.
Thank you very much :)!!!
If may i ask you if you know how can i reduce the price of this in the “promo” menu and also how can I increase the font in the title (i will send you a screenshot for both questions 
)
THANK YOU VERU MUCH @Vinsinfo
